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CCS/AM5728: QSPI boot

Kevin Chen81
Intellectual 340 points
Part Number: AM5728

Tool/software: Code Composer Studio

Dear all，

Our customer AM5728 board connects NOR Flash via QSPI. They have problems booting from NOR Flash.

We know that the customer settings are as follows: 

           SYSboot = 1, pull-up ;

           Gpmc_a [27:24, 22:19] for MMC2, drop-down ;

           Client chip version is REV2.0.

If you start from SD card, there is no problem.

Is there any suggestion for us to investigate?

Best Regards.

Kevin Chen

  • 0
    TI__Guru**** 393215 points

    Hi,

    Kevin Chen81 said:
    SYSboot = 1, pull-up

    This makes no sense. There are 16 SYSBOOT pins. 

    Kevin Chen81 said:
    Gpmc_a [27:24, 22:19] for MMC2, drop-down

    I do not understand this. Please explain. 

    In addition please verify that the QSPI connections are correct, as required in section 8.6.2 of the AM572x Datasheet SR2.0 Rev. F. Verify that QSPI1 on CS0 is the communication interface.